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⭐ Featured Technology
System Design Series: Service Discovery Explained Simply

Imagine you're using Uber. You request a ride. Within seconds, your request reaches an available driver near you. But here's the interesting question. How did Uber know which driver service to contact?

System Admin 6m read 34 0
⭐ Featured Technology
System Design Series: BASE Properties Explained Simply

Imagine you're scrolling through your Instagram feed. You like a post. Your friend refreshes their phone immediately. For a few seconds... they still don't see your like. Did the system lose your data? No.

System Admin 6m read 39 0
⭐ Featured Technology
System Design Series: ACID Properties Explained Simply

Imagine you're transferring ₹10,000 from your bank account to your friend's account. The process looks simple. Your account balance decreases. Your friend's balance increases. Now imagine something goes wrong halfway through. Your account is debited. But your friend's account is never credited because the database crashed. The money disappears.

System Admin 6m read 59 0
Technology 6m read
System Design Series: SQL vs NoSQL Explained Simply

Imagine you're building the next Amazon. Your application needs to store: Customer information Product catalog Orders Payments Reviews Shopping carts One of the first questions you'll face is: Should I use SQL or NoSQL?

System Admin
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Technology 6m read
System Design Series: Database Indexing Explained Simply

Imagine you're using Amazon during the Big Billion Sale. You search for: "iPhone 16 Pro" Within milliseconds, thousands of matching products appear. Now imagine Amazon had to scan every product in its database before showing the results. Instead of milliseconds... It could take minutes. Imagine the experience for millions of users.

System Admin
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Technology 7m read
System Design Series: Circuit Breaker Pattern Explained Simply

System Design Series — Part 32 Imagine you're using Amazon during a big sale. You click "Buy Now." Behind the scenes, your request travels through multiple services: Order Service Payment Service Inventory Service Notification Service Shipping Service

System Admin
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Technology 6m read
System Design Series : Rate Limiting Explained Simply

System Design Series — Part 31 Imagine you've built a successful e-commerce application. Everything works perfectly. One day, your API suddenly receives 2 million requests in just a few minutes. Some requests come from real users.

System Admin
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Technology 6m read
System Design Series : Session Management Explained Simply

System Design Series — Part 30 Imagine you log in to your internet banking application. You enter your username and password only once. After logging in, you can: Check your account balance Transfer money Download statements Pay bills You never enter your password again until you log out. But here's the question:

System Admin
57 0 0
Technology 7m read
System Design Series: JWT Authentication Explained Simply

How does the server know it's still you? Does the server remember every logged-in user? Not usually. Instead, most modern applications use something called a JWT (JSON Web Token). JWT is one of the most widely used authentication mechanisms in modern web applications, mobile apps, APIs, and microservices.

System Admin
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